#!/bin/sh

WIRELESS="$1"

# First try a minor cycle

ESSID=$(/sbin/iwconfig "$WIRELESS" 2>/dev/null |grep ESSID |perl -ne 'm/\"([^\"]+)\"/ && print $1,qq(\n)')

if [ -n "$ESSID" ]; then
    sudo iwconfig "$WIRELESS" essid "$ESSID"
    sleep 1s;
    if /sbin/iwconfig "$WIRELESS" 2>/dev/null | grep 'Bit Rate'|grep -qv '=1 Mb/s'; then
	exit 0
    fi;
fi;

# Failure, so major cycle
sudo ifdown wireless;
if [ "$WIRELESS" == "wireless" ]; then
    if lsmod|grep -q bcm43xx; then
	sudo modprobe -r bcm43xx;
	sudo modprobe bcm43xx;
    else
	sudo modprobe -r b43;
	sudo modprobe b43;
    fi;
    sleep 2s;
fi;
sudo ifup "wireless";